# -*- coding:utf-8 -*-

import queue
import threading
import time


# Queue 模块中的常用方法:
#
# Queue.qsize() 返回队列的大小
# Queue.empty() 如果队列为空，返回True,反之False
# Queue.full() 如果队列满了，返回True,反之False
# Queue.full 与 maxsize 大小对应
# Queue.get([block[, timeout]])获取队列，timeout等待时间
# Queue.get_nowait() 相当Queue.get(False)
# Queue.put(item) 写入队列，timeout等待时间
# Queue.put_nowait(item) 相当Queue.put(item, False)
# Queue.task_done() 在完成一项工作之后，Queue.task_done()函数向任务已经完成的队列发送一个信号
# Queue.join() 实际上意味着等到队列为空，再执行别的操作


exitFlag = 0


class myThread(threading.Thread):
    def __init__(self, threadID, name, q):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.q = q  # 队列

    def run(self):
        print("开启线程：" + self.name)
        process_data(self.name, self.q)
        print("退出线程：" + self.name)


def process_data(threadName, q):
    while not exitFlag:
        queueLock.acquire()
        if not workQueue.empty():
            data = q.get()
            queueLock.release()
            print("%s processing %s" % (threadName, data))
        else:
            queueLock.release()
        time.sleep(1)


if __name__ == '__main__':

    threadList = ["Thread-1", "Thread-2", "Thread-3"]
    nameList = ["One", "Two", "Three", "Four", "Five"]

    queueLock = threading.Lock()  # 获取队列锁
    workQueue = queue.Queue(10)  # 设定队列，容量10
    threads = []
    threadID = 1

    # 创建新线程
    # queueLock.acquire()  # 队列上锁
    for tName in threadList:
        thread = myThread(threadID, tName, workQueue)
        thread.start()
        threads.append(thread)
        threadID += 1

    # 填充队列
    queueLock.acquire()  # 队列上锁
    for word in nameList:
        workQueue.put(word)
    queueLock.release()  # 释放锁

    # 等待队列清空
    while not workQueue.empty():
        pass

    # 通知线程是时候退出
    exitFlag = 1

    # 等待所有线程完成
    for t in threads:
        t.join()
    print("退出主线程")
